JP2000032716A - Coil winding device and method for using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for winding a coil or a group of coils which can wind different wires at a low cost. SOLUTION: A coil winding device 1 has a 2nd flier with a 2nd wire guide in addition to a 1st flier 2 with a 1st wire guide 4. The 2nd flier is designed so as to be rotated around a rotation axis same as the rotation axis of the 1st flier. Further, by providing a winding disc 23 in the route of the 2nd wire guide, the 2nd wire guide can be provided outside the 1st wire guide.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for winding a coil or a coil group for a stator of an electric motor, and a method of using the same.

[0002]

2. Description of the Related Art A stator coil or coil group of an electric motor is usually wound around a winding die by a so-called flyer, and then lowered into a drawing device for drawing the coil or coil group into a stator core. . Generally, such flyers have a rotating arm with a wire guide for the coil wire. Because the wire ends are supported by a separate wire holder, the coil wire is withdrawn from the wire feeder while the flyer rotates, and the coil wire passes through the wire guide of the flyer during winding.

[0003]

However, in order to produce another wire, for example a coil consisting of a wire having a different diameter or material from the already wound coil, known devices use an existing wire feeder. It must be removed from the device and a new wire must be pulled in. At this time, it takes a certain time since the wire is pulled in manually. This slowed down manufacturing and led to increased costs.

An object of the present invention is to provide an apparatus capable of winding various coils or coil groups at low cost, and a method of using the same.

[0005]

Means for Solving the Problems and Effects of the Invention In order to solve the above-mentioned problems, a coil winding device according to the present invention is used particularly for winding a coil or a coil group for a stator of an electric motor, and is provided with a winding type. And a first wire guide rotatably provided around the first wire guide.
In the coil winding device provided with a flyer, a second flyer having a second wire guide is provided separately from the first wire guide.

[0006] A wire different from the first wire is drawn into the second wire guide of the second flyer. For example,
A coil consisting of a second wire of different diameter and / or material can be wound at any time by a second flyer. It is also easy to wind two coils simultaneously using both flyers. This is true even when the same wire is used for both flyers.

Further, effective embodiments of the present invention and development examples thereof are obtained by the methods described in the dependent claims. For example, in one advantageous embodiment, the second flyer is the first
It is designed to be able to rotate around the same rotation axis as the flyer. The axis of rotation common to the two flyers is preferably provided at the center of the winding mold so that the wires are each drawn at as uniform a speed as possible during the winding of the coil.

Further, in an advantageous development of the present invention, a winding disk is provided in the path to the second wire guide. By providing such a winding disk, it is possible to provide the second flyer in a radial direction with respect to the common rotation axis of the two flyers and outside the first flyer, and to connect the second wire guide to the first wire guide. It can be provided outside.

In this case, the first wire guide is desirably provided so as to run at least partially on the rotation axis of the flyer. In the first flyer, the wire is located radially away from the axis of rotation. Therefore, the first
The area that must be unobstructed by other mechanical parts so that the first wire in the wire guide can rotate is limited to the immediate vicinity of the winding mold.

[0010] Since the winding disc is provided in the path to the second wire guide, the second wire guide can be provided outside the rotation axis of the two flyers, so that the paths of the two wires intersect. There is no. The rotary arms of the two flyers are designed to have a fixed radius, and the radius of the first flyer is smaller.

[0011] In this case, the above-mentioned winding disk is adapted to follow the tension of the wire wound by rotation.
Preferably, it is rotatably mounted. During the rotation of the second flyer, the wire feeding winding is always wound on the winding disk. In this case, there are various ways to operate the second flyer during winding of the coil. For example,
The wire may be secured by a separate wire holder while the second flyer rotates, as in the prior art device or the first flyer. During the process, the corresponding supply winding is wound on the winding disk of the second wire guide while the coil is wound on the winding mold.

In order to unwind the supply winding, the rotation direction of the second flyer can be reversed. That is, the wire is first unwound from the take-up disc for the next coil to be wound. At this time, before the wire can be wound on the wound disc,
The direction of rotation of the second flyer must be reversed.

Another method of operating the second flyer is to attach a wire supply winding having a defined number of turns to a winding disk before winding the coil. This can be done by providing a wire holder on the rotating arm of the second flyer. When a supply winding having a predetermined length is mounted on the winding disc, the direction of rotation of the second flyer is reversed,
The wire ends are transferred from the wire holder of the second flyer to the wire holder provided on the winding mold, and the desired coil is wound in a conventional manner in which the flyer winds the coil on the winding mold in a conventional manner.

Although the wound disk has a defined outer circumference, the winding die may have different outer circumferences to produce coils of different sizes, so that a specific number of revolutions around the wound disk. The length of the wound wire is not necessarily the same as the length of the wire required to wind the coil on the winding mold by the same number of revolutions. If the outer circumference of the winding disc is smaller than the outer circumference of the winding mold, this may cause the rotation speed to increase,
This is compensated for by the winding disk rotating in the opposite direction to the second flyer, so that the required amount of wire is subsequently supplied without problems.

However, if the circumference of the winding disk is larger than the circumference of the winding die and / or the coil to be wound, the length is compensated for by rotating the winding disk in the same direction as the flyer, and an extra amount of wire is removed. Again, it will be supplied to the wire guide. To this end, suitable means for pulling the wire in the opposite direction of the feed are advantageously provided. These methods for pulling the wire are realized, for example, by a compensating roller around which the wire is placed in an S-shape, at least one of which can be moved against the restoring force.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the coil winding device 1 has a first flyer 2, and a first rotating arm 3 has a first wire guide 4 for guiding a first wire 5. The first rotating arm 3 is mounted via a radial bearing so as to be able to rotate around the rotating shaft 7.

At the outlet 8 of the wire 5 in the first rotating arm 3, the first wire guide 4 is bent in the direction of the rotating shaft 7 so that the wire 5 is guided to a winding mold 11 composed of two parts 9, 10. ing. The winding mold 11
It has various steps 12 for winding coils having various perimeters.

The wire 5 is guided above the first flyer 2 into an axial guide 13 on the rotating shaft 7.
As is well known, the first flyer 2 is provided with a tip 14 of the wire 5.
Function while supported by a wire holder (not shown in detail). Then, the rotating arm 3 is rotated, and as a result, the wire 5 is wound around the winding mold 11. In that process, the wire 5 is pulled from above in the direction of arrow Z1.

The second flyer 15 with the second rotating arm 16 has a second wire guide 17 bent at its outlet 18 towards the rotating shaft 7. Second wire 1
9 is guided inside the second wire guide 17, and its wire end 20 is directed to the rotating shaft 7, that is, toward the winding mold 11. The wire end 20 is connected to the second rotating arm 1
6 is fixed to a wire holder 21 which is in close contact with 6. In some operation modes, the wire end 20 ′ is connected to the wire holder 2.
Instead of being supported by one, it may be supported by a separate wire holder (not shown in detail).

The second rotary arm 16 of the second flyer 15
Is similarly mounted via a radial bearing 22 so that it can rotate around the rotating shaft 7. Separately, a winding disc 23 is likewise mounted via a radial bearing 24 so as to be able to rotate around the rotary shaft 7.

The wire supply device 25 is provided above the winding disk 23 and has an outlet 26 which forms an arc toward the winding disk 23. Correspondingly, the entrance 2 of the second wire guide 17 of the second flyer 15
7 likewise draws an arc towards the winding disk 23.

The winding disk 23 is provided with an outer peripheral groove 28 for winding a wire supply winding 29 supplied from a wire supply device 25. The wire supply winding 29 supplied from the wire supply device 25 via the outlet 26 is wound around the winding disk 23 by a predetermined amount,
The tip passes through the second rotary arm 16 from the inlet 27 and is supplied to the winding mold 11 via the outlet 18.

Above the wire supply device 25, there is provided a tensioning device 30 comprising three compensation rollers 31, 32, 33. The compensating roller 32 can be moved against the restoring force as indicated by the arrow P in both directions. The operation mode of the second flyer 15 is as follows.

In the first operation mode, the wire supply winding 29 is wound on the winding disk 23 by the second flyer 15. This is because the wire end 20 is fixed to the wire holder 21 and the second rotating arm 1
6 is performed by rotation. During operation, the second wire 19 is pulled through the wire feeder 25 in the direction of arrow Z2.

Next, the wire end 20 is connected to the wire holder 21.
Released from. And the released wire end 20 '
Are secured to a separate wire holder (not shown in detail), and then the second flyer 15 rotates in a direction opposite to the previous rotation. In operation, the coil is wound onto the winding mold 11 while the wire supply winding 29 is unwound.

In this embodiment, the outer circumference of the winding die 11 is smaller than the outer circumference of the winding disk 23 in all the steps 12. Therefore, when the second rotating arm 16 rotates while the coil is wound around the winding mold 11,
An extra length of wire will be supplied. This extra wire is pulled up in the direction opposite to the supply direction Z2. At this time, the winding disk 23 rotates at a predetermined rotation speed due to the wire tension. In this way, the necessary length compensation for the wire 19 is performed.

Conversely, when the outer circumference of the winding die 11 is larger than the outer circumference of the winding disk 23, the winding disk 23 is moved by pulling the wire 19 in the opposite direction. That is, the winding disk rotates in the opposite direction to the second flyer 15, thereby supplying more wire pulled from above in the direction of arrow Z2.

The wire supply winding 29 may be mounted by another operation as described above, or may be wound at the same time as winding the coil on the winding die 11 in the second operation mode. If necessary, the pulling device 30 can pull the wire 19 in the direction opposite to the arrow Z2. Therefore, it is necessary to adjust the number of the adjusting rollers 31, 32, 33 or the movement of the movable adjusting roller 32 according to the length of the wire to be supplied. Here, the pulling device 30 is only shown for the sake of illustration.

The embodiments of the present invention have been described above. However, the embodiments of the present invention are not limited to the above-described embodiments, and may take various forms within the technical scope of the present invention. Needless to say.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a coil winding device according to an embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Coil winding device, 2 ... 1st flyer, 3 ...
1st rotating arm, 4 ... 1st wire guide, 5 ... 1st
Wire 6 Radial bearing 7 Rotating shaft 8 Outlet 9 Part 10 Part 11 Winding type
12: step, 13: axial guide, 14: wire end, 15: second flyer, 16: first rotating arm,
17 ... second wire guide, 18 ... outlet, 19 ... wire, 20 ... wire end, 21 ... wire holder, 22
... radial bearings, 23 ... winding discs, 24 ... radial bearings, 25 ... wire feeders, 26 ... outlets,
27 ... inlet, 28 ... outer circumferential groove, 29 ... wire supply winding, 30 ... tensioner, 31, 32, 33 ... compensation roller

Claims (13)

[Claims] 1. A coil which is used in particular for winding a coil or a coil group for a stator of an electric motor, and which is provided rotatably around a winding mold and provided with a first flyer having a first wire guide. A winding device, comprising: a second flyer having a second wire guide separately from the first wire guide. 2. Apparatus according to claim 1, wherein the second flyer can rotate around the same axis of rotation as the first flyer. 3. Apparatus according to claim 1, wherein the winding disc is provided in the path to the second wire guide. 4. Apparatus according to claim 3, wherein the winding disc is rotatable. 5. Apparatus according to claim 1, wherein the first wire guide is at least partially on the axis of rotation. 6. Apparatus according to claim 1, wherein the second wire guide is provided outside the first wire guide. 7. The apparatus according to claim 1, wherein the means for pulling the wire in a direction opposite to its feeding direction comprises:
An apparatus provided in a path to the second wire guide. 8. Apparatus according to claim 1, wherein the second flyer is provided with a wire holder. 9. The apparatus according to claim 1, wherein the rotation of the second flyer can be reversed. 10. A method for producing a coil or a group of coils for a stator of an electric motor, in which the apparatus according to claim 1 is used. 11. The method of claim 10, wherein a supply winding is wound on the winding disk while a coil is wound around the winding mold. 12. The method according to claim 10, wherein the wire end is fixed to the wire holder of the second flyer, and the supply winding is wound. 13. The method according to claim 10, wherein the supply winding is unwound from the winding disc, while rotating in a direction opposite to a winding direction of the supply winding on the winding disc. Wherein the coil is wound around the winding mold.